DavePhelps Posted October 17, 2016 Share Posted October 17, 2016 Does anyone know if the black tank rinse has a built in back flow preventer? Should this be a concern? I'm not as worried about my water hose, as it's dedicated for the task, but I am concerned about the water supply where I hook up to. Also regarding the sewer hose (the big 3" hose). I am getting rid of the supplied hose for a better quality, and longer one. What length hose do you all use? The factory hose was just barely long enough for more than a few times, but I don't want miles of the stuff either... Thanks. Dave 1 2015 Oliver Elite, Hull 107 1998 Ford E-250, 5.4 liter Link to comment Share on other sites More sharing options...
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